SMC Networks SMC6224M manual 173, Selecting the Queue Mode

CLASS OF SERVICE CONFIGURATION

Selecting the Queue Mode

You can set the switch to service the queues based on a strict rule that requires all traffic in a higher priority queue to be processed before lower priority queues are serviced, or use Weighted Round-Robin (WRR) queuing that specifies a relative weight of each queue. WRR uses a predefined relative weight for each queue that determines the percentage of service time the switch services each queue before moving on to the next queue. This prevents the head-of-line blocking that can occur with strict priority queuing.

Command Attributes

•WRR - Weighted Round-Robin shares bandwidth at the egress ports by using scheduling weights 1, 2, 4, 6 for queues 0 through 3 respectively. (This is the default selection.)

•Strict - Services the egress queues in sequential order, transmitting all traffic in the higher priority queues before servicing lower priority queues.

Web – Click Priority, Queue Mode. Select Strict or WRR, then click Apply.

Figure 3-74 Queue Mode

CLI – The following sets the queue mode to strict priority service mode.

Console(config)#queue mode wrr	4-221
Console(config)#exit
Console#show queue mode	4-225

Queue mode: wrr

Console#

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